The act of continuing masturbation post-ejaculation, to the extent of frothing the seed to a cappuccino milk consistency; upon achieving maximum froth, proceed to sprinkle chocolate powder (not of an anal variety) on top and enjoy.
Example 1:
"I was gagging for a Starbucks during sex, so asked if he'd make me a fappuccino"
Example 2:
Person A - "I was getting tired whilst doing work so perked myself up with a cheeky fappuccino..."
Person B - "By yourself?"
Person A - "Of course! Nothing like a 'home brew'."
A Cappuccino that instead of whip cream you use male ejaculation juice (a.k.a. Jizz, Cum, white cream)